Optional Safety Devices; Microswitch; Hand Release Lever; Lifting Tab - KEB COMBISTOP Instruction Manual

Product Description

3.5 Optional Safety Devices

3.5.1

Microswitch

A microswitch can be used to monitor the switching state of the armature and thus
whether the brake is engaged or disengaged, or to monitor brake wear. A single
microswitch cannot perform both functions so two microswitches are needed if you need
to monitor both brake state and brake wear. The customer is responsible for connecting
the electrical equipment required to monitor the signals from any installed microswitches.
When configured to monitor armature movement, the PLC or VFD control can be
programmed to prevent the motor from starting until the brake is released to avoid wear
and tear on the motor.
When configured to monitor wear, the microswitch can be adjusted to signal after Xn of
wear to the friction lining.
→ For microswitch installation instructions, see section Microswitch.
3.5.2

Hand Release Lever

The hand release lever can be installed to provide manual release of the brake in the
case of power outages or malfunctions. The COMBISTOP type 38 brake engages when
powered off, so in the case of a power outage the brake will bring the system to a safe
halt.
To use the hand release lever, pull directly away from the motor to disengage the brake.
When the hand release lever is released, the brake will engage once more.
→ For hand release lever installation instructions, see section Hand Release Lever.
3.5.3

Lifting Tab

The size 10 brakes come with an attached lifting tab. This tab provides an eye hook so
the brake can be lifted with a hoist. Remove the lifting tab once the brake has been
mounted.
2021 KEB America, Inc.
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 Flanges/Friction Disks are only required if the application does not
have a suitable machined cast iron or steel mounting surface.
 Flanges and Friction Disks are mutually exclusive. You do not
need to use both for a single brake.
 The brake has an IP20 protection rating without dust protection
ring. This raises to IP44 with the optional dust protection ring.
Lifting Tab
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